William T. McEnroe represents US and international clients in a variety of high-stakes complex commercial matters with a focus on antitrust, commercial, and white collar litigation and investigations. Will also counsels businesses on antitrust and litigation risks and advises on risk management strategies.
Defending a generic pharmaceutical manufacturer in multi-district litigation regarding alleged price fixing and market allocation.
Represented a chemical manufacturer against allegations of price fixing in a four-week federal trial.
Argued a pre-trial motion in limine on behalf of a dairy manufacturer in a federal antitrust case.
Represented a pharmaceutical manufacturer in an appeal before the Pennsylvania Supreme Court regarding AWP pricing.
Led document collection and witness interviews in multiple internal investigations concerning various topics including the use of “no hire” and “no poach” agreements and alleged false claims.
Represented a prisoner in a three-day trial alleging constitutional violations against prison guards.
Represented same-sex couples challenging the validity of Pennsylvania’s marriage laws.
University of Pennsylvania Law School, 2010, J.D., magna cum laude, Order of the Coif
University of Pennsylvania, 2005, B.A., cum laude
US Court of Appeals for the Third Circuit
US District Court for the Eastern District of Pennsylvania
US District Court for the Middle District of Pennsylvania
Clerkship to Judge Mary A. McLaughlin of the US District Court for the Eastern District of Pennsylvania (2010 - 2011)
Awards and Affiliations
One to Watch, Antitrust Law, Philadelphia, The Best Lawyers in America (2021–2023)
One to Watch, Criminal Defense: White Collar, Philadelphia, The Best Lawyers in America (2021–2023)
Member, Practice Group of the Year, Competition, Law360 (2018–2021)
Rising Star, Pennsylvania Super Lawyers (2019)
Young Lawyer Advisory Panel for the ABA Section of Antitrust Law's Civil Practice & Procedure Committee
Editorial Board Member, University of Pennsylvania Law Review